Synthesis and catalytic properties of phenylene-bridged binuclear organolanthanide complexes

Holming F. Yuen, Tobin J Marks

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Using base-free Ln[N(SiHMe2)2]3 complexes as highly effective protodeamination reagents, the binuclear lanthanide complexes p-bis{η5-(2,3,4,5-tetramethylcyclo-pentadienyl) Ln[N(SiHMe2)2]2}phenylene [p-Ln2] (Ln -Y, La, Lu) and m-bis{η5-(2,3,4,5- tetramethylcyclopentadienyl)La-[N(SiHMe2)2] 2}phenylene [m-La2] were synthesized from the corresponding phenylene-linked tetramethylcyclopentadienes. The resulting products serve as new types of multicenter homogeneous 4f catalysts. Reactivity studies reveal that these binuclear organolanthanide complexes efficiently catalyze the intramolecular hydroamination/cyclization of aminoalkenes, aminoalkynes, and aminodienes, with turnover frequencies as high as 10 h -1 at 60°C.

Original languageEnglish
Pages (from-to)155-158
Number of pages4
JournalOrganometallics
Volume27
Issue number2
DOIs
Publication statusPublished - Jan 28 2008

Fingerprint

Lanthanoid Series Elements
Cyclization
reagents
reactivity
catalysts
Catalysts
synthesis
products

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Organic Chemistry

Cite this

Synthesis and catalytic properties of phenylene-bridged binuclear organolanthanide complexes. / Yuen, Holming F.; Marks, Tobin J.

In: Organometallics, Vol. 27, No. 2, 28.01.2008, p. 155-158.

Research output: Contribution to journalArticle

@article{c5f52425c0644ac79ee26e1cfe5b2a28,
title = "Synthesis and catalytic properties of phenylene-bridged binuclear organolanthanide complexes",
abstract = "Using base-free Ln[N(SiHMe2)2]3 complexes as highly effective protodeamination reagents, the binuclear lanthanide complexes p-bis{η5-(2,3,4,5-tetramethylcyclo-pentadienyl) Ln[N(SiHMe2)2]2}phenylene [p-Ln2] (Ln -Y, La, Lu) and m-bis{η5-(2,3,4,5- tetramethylcyclopentadienyl)La-[N(SiHMe2)2] 2}phenylene [m-La2] were synthesized from the corresponding phenylene-linked tetramethylcyclopentadienes. The resulting products serve as new types of multicenter homogeneous 4f catalysts. Reactivity studies reveal that these binuclear organolanthanide complexes efficiently catalyze the intramolecular hydroamination/cyclization of aminoalkenes, aminoalkynes, and aminodienes, with turnover frequencies as high as 10 h -1 at 60°C.",
author = "Yuen, {Holming F.} and Marks, {Tobin J}",
year = "2008",
month = "1",
day = "28",
doi = "10.1021/om7008952",
language = "English",
volume = "27",
pages = "155--158",
journal = "Organometallics",
issn = "0276-7333",
publisher = "American Chemical Society",
number = "2",

}

TY - JOUR

T1 - Synthesis and catalytic properties of phenylene-bridged binuclear organolanthanide complexes

AU - Yuen, Holming F.

AU - Marks, Tobin J

PY - 2008/1/28

Y1 - 2008/1/28

N2 - Using base-free Ln[N(SiHMe2)2]3 complexes as highly effective protodeamination reagents, the binuclear lanthanide complexes p-bis{η5-(2,3,4,5-tetramethylcyclo-pentadienyl) Ln[N(SiHMe2)2]2}phenylene [p-Ln2] (Ln -Y, La, Lu) and m-bis{η5-(2,3,4,5- tetramethylcyclopentadienyl)La-[N(SiHMe2)2] 2}phenylene [m-La2] were synthesized from the corresponding phenylene-linked tetramethylcyclopentadienes. The resulting products serve as new types of multicenter homogeneous 4f catalysts. Reactivity studies reveal that these binuclear organolanthanide complexes efficiently catalyze the intramolecular hydroamination/cyclization of aminoalkenes, aminoalkynes, and aminodienes, with turnover frequencies as high as 10 h -1 at 60°C.

AB - Using base-free Ln[N(SiHMe2)2]3 complexes as highly effective protodeamination reagents, the binuclear lanthanide complexes p-bis{η5-(2,3,4,5-tetramethylcyclo-pentadienyl) Ln[N(SiHMe2)2]2}phenylene [p-Ln2] (Ln -Y, La, Lu) and m-bis{η5-(2,3,4,5- tetramethylcyclopentadienyl)La-[N(SiHMe2)2] 2}phenylene [m-La2] were synthesized from the corresponding phenylene-linked tetramethylcyclopentadienes. The resulting products serve as new types of multicenter homogeneous 4f catalysts. Reactivity studies reveal that these binuclear organolanthanide complexes efficiently catalyze the intramolecular hydroamination/cyclization of aminoalkenes, aminoalkynes, and aminodienes, with turnover frequencies as high as 10 h -1 at 60°C.

UR - http://www.scopus.com/inward/record.url?scp=38949217341&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38949217341&partnerID=8YFLogxK

U2 - 10.1021/om7008952

DO - 10.1021/om7008952

M3 - Article

AN - SCOPUS:38949217341

VL - 27

SP - 155

EP - 158

JO - Organometallics

JF - Organometallics

SN - 0276-7333

IS - 2

ER -